【文章內(nèi)容簡介】 or m ore micr opr ocessor s。 ( 2) t he of ficial designer of t he sof t war e wr itng content cont rol is all about. Now in sever al ways in t he cont ext of indust rial aut om ation can of t en be seen in t hr ee ways: ( 1) Pr ogr amm able Logical Cont roler (r ef err ed t o as I PC)。 ( 2) Dist ribut ed Contr ol Sys tem ( DCS f or short ), and ( 3) t he Pr ogram mable Logical Contr oler ( PLC f or shor t). . 2 PLC and t he I PC and DCS cont rast contr ast 1, each of t he t hree t echnologies of or igins and developm ent r equir em ent s f or f ast dat a pr ocessing m akes it invented t he puter. The m en brought in t erm s of har dwar e t here, using a high level of st andar dization, can use m or e pat ibilt y t ools, is a r ic h sof t war e r esour ces, especially t he need f or imm ediacy in oper ational syst em s. So t he put er can eff ectively cont r ol is us ed t o cont rol and m eet it s peed, on t he vir t ual m odel, r eal t ime and in putational r equir em ents. Dist ributed system start ed wit h a cont rol syst em f or indust rial aut om at ic nst r ument used t o contr ol, whereas now it is sucessf uly developed int o indust r ial cont rol puter used as a centr al colect ion and distr ibut ion syst em and t ransit ion of dist ributed contr ol system in analogue handling, loop cont rol, has begun to r ef lect t he use of a huge advant age. Though dist ribut ed system has gr eat advant ages in loop r egulation, but only as a means of cont inuous process cont rol. Optimization of PLC is t he cor esponding r elay needs was bor n, it s m ain use in t he wor k or der contr ol, early pr imary is r eplaced r elay t his hulking system, f ocused on the switch contr oling t he r uning order of funct ions. M ar ked by the microprocessor in t he early 1970 of t he 20t h century emerged, m icroelectronics t echnol gy has developed r apidly, people soon microelect ronics pr ocessing t echnol gy wil be used in t he Pr ogrammable Logical Contr oler ( t hat is 春夜喜雨 西江月 ?夜行黃沙道中 天凈沙 ?秋 天上的街市 白樺 與詩同行 我們?nèi)タ春? 致老鼠 爸爸的鼾聲 給詩加 “腰 ” 詩中的 “秋 ” 第七組 21 老人與海鷗 22* 跑進(jìn)家來的松鼠 23 最后一頭戰(zhàn)象 24* 金色的腳印 詞語盤點(diǎn) 口語交際 ?習(xí)作七 回顧 ?拓展七 第八組 25 伯牙絕弦 26 月光曲 27* 蒙 娜麗莎之約 28* 我的舞臺(tái) 詞語盤點(diǎn) 口語交際 ?習(xí)作八 回顧 ?拓展八 選讀課文 林海 祖國，我終于回來了 小抄寫員 鹿和狼的故事 軍神 我們的方陣 軍犬黑子 看戲 生字表 1《山中訪友》教學(xué)設(shè)計(jì) 學(xué)習(xí)目標(biāo) 1．有感情地朗讀課文，把握文章主要內(nèi)容，背誦自己喜歡的部分。 2．感受作者所描寫的境界，激發(fā)學(xué)生類似體驗(yàn)，培養(yǎng)學(xué)生熱愛自然、親近自然的美好情感。 3．學(xué)習(xí)作者善于運(yùn)用比喻、擬人、想象等手法來抒發(fā)情感的方法。 4．掌握本課 8 個(gè)生字，理解新詞的意思，摘錄好詞好句。 M anipulator is now used as a indust rial r obot s in use, t he contr ol bj ectives of t en appear oft en in industr ial aut omation. I ndustr ial automation t echnol gy has gr adually m at ur ed, as mat ur e a t echnol gy line has been r apid developm ent in industr ial aut omation as a separ at e subject . M anipulat or application began t o f ilt er int o welding, logistics, mechanical pr ocessing, and ot her indust ries. Especially at high or ver y low t em per at ures, f ul of poisonous gases, high r adiation case, r obot in sim ilar cir cum st ances showed gr eat use also br ings gr eat convenience t o t he st af f. Pr ecisely because of t his r obot t o get people39。s at tent ion began t o be a high degree of developm ent. Labor ates, working condit ions, labor int ensive aspect s of pr om ot ing developm ent. Bot h at hom e and abroad t o develop t he PLC ( pr ogr amm able logic contr oler) is in various special cir cum st ances and under special condit ions et f or m echanical devices. Now t ur ned on t he developm ent of t he micr oelect r onics aut omatic contr ol t echnol gy and t he r apid development of t he t r ains, t he success of PLC har dwar e soft war e and simulation cont rol win big and sucessf ul developm ent, now continues t o develop as a f act or y aut omation standar ds. Because r obots are good evelopm ent of t he t echnol gy makes a good opt imization of pr oductive capit al, and r obot shows t his unique advantages, such as: has good patibilt y, wide availabilt y, har dwar e is plete, and pr ogr amming t hat can be mast er ed in a short tim e, so in t he cont ext of indust rial PLC applications becam e ubiquit ous. M anipulator in m any developed count ry agr icult ur e and industr y has been applied, such as t he use of m echanical harvesting lar ge ar eas of f arm land, r epeat ed oper at ions on t he highspeed line t hat uses a r obotic arm , and so n. Today, t he high level of aut omation bined wit h r estr ictions on t he m anipulator development level is slight ly lower t han t he int er national. The design is m ainly arm welding m achine by PLC Aut om ation contr ol. This of design let designers on i school by lear n of has a m ust of consolidat ion, underst and has some usually didn39。t opport unit ies awar eness in world r ange wit hin som e leading level of knowledge has has m ust awar eness, hope designers can in yihou of design in t he can suc ess of using in t his design i t he pr oceeds of experience 1. 2 m anipulator in bot h at hom e and abroad of r esearch pr ofile aut om ation m echanical ar m r esearch began Yu 20t h cent ur y m ediumt erm, af t er years wit h wit h put er and aut omation t echnol gy of developm ent , M akes m echanical ar m on t he Gr and st age of industrial aut om at ion and shine, gradually became an industr ial evaluation st andar ds, and it s im por tance can be seen. Now original r obot ic arm spent m ost of m ass pr oduct ion and use on t he pr oduct ion li e, which is pr ogr ammed r obot ic arm. As t he f ir st gener ation of manipulat or posit ion contr ol syst ems m ain f eatur es, alt hough not back sever al gener ations t hat can detect t he external envir onm ent, but can stil successfuly plete like welding, painting, deliver y as well as for materials simple m ovements. Second generation mechanical ar ms ar e equipp